Study of coupled states for the (4s2)1S + (4s4p)3P asymptote of Ca2*
Institut für Quantenoptik, Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
2 Department of Physics, Sofia University, 5 James Bourchier blvd, 1164 Sofia, Bulgaria
3 Laboratoire Aimé Cotton, CNRS, Bâtiment 505, Campus d'Orsay, 91405 Orsay Cedex, France
Published online: 28 June 2005
The coupled states (1D + 1S), (3P + 1S) and (3P + 1S) of the calcium dimer are investigated in a laser induced fluorescence experiment combined with high-resolution Fourier-transform spectroscopy. A coupled state analysis of the observed levels, considering a potential model, which is complete within the subspace of relevant neighboring states, is performed using the Fourier Grid Hamiltonian method. We determine the potential energy curve of the and states and the strengths of the couplings between them. The and states are of particular importance for the description of collisional processes between calcium atoms in the ground state 1S0 and excited state 3P1 applied in studies for establishing an optical frequency standard with Ca.
PACS: 31.50.Df – Potential energy surfaces for excited electronic states / 33.20.-t – Molecular spectra / 34.20.Cf – Interatomic potentials and forces
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2005